Just had my interviews today,good luck to all of you guys who’ll be doing it in the next few day.Don't stress and try to show them your passion for science and mathematics,make sure to mention ALL of your extra curriculum activitrs(even if you don’t excel at some) and just show them how you’re suitable for this school.
For one on one interviews always try to say something,the last thing you want to do is be silent or say ‘I don’t know’,if they ask about climate change tell them something you know or think might be true,ask about career,tell them about you favorite science jobs or which scientist you admire and tell them about how you would like to study his/her field.Just never be silent or reply with ‘I don’t know’